Monolithic cementitious structure.



, To all whom it may concern:

UNTTEM STATES PATENT @FETCH ALBERT G. HIGGINS, OF KANSAS CITY, MISSOURI, ASSIGNCR TO TRUSWALL MFG. C0.. A CORPORATION 0F MISSOURI.

MONOLITHIC CEMENTITIOUS STRUCTURE.

Specification of Letters Patent.

Patented Feb. M, 1913.

Be it known that I, ALBERT G. HIGGINS, a citizen of the United States, residing at Kansas City, iny the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Monolithic Cementitious Structures, of which the following is a specification.

This invention relates to reinforced cementitious structures, and my object is to produce a structure of this character which can be erected in less time and at less expense than analogous structures erected by the employment of forms and false work as is common in this class of structures.

A further Objectis to produce a structure of the character specified without any molds or falsework which is'as strong, durable and as attractive in outline 'and finish as cement structures produced by the common method.

With these general objects in View the invention consists in certain novel and pecul-v iar features of construction and `or anization as hereinafter'described and climed; and in order that it may be fully understood referenceis to be had to the accompanying drawing, in Which:-

Figure 1, is a perspective View of a cementitious monolithic structure embodying my invention. v Fi 2, is an enlarged horizontal section on the ine II-II of Fig. 1. Fig. 3, is a vertical section on the Vline IIL-III of Fig. 2. I

- In carrying out the invention I employ a hollow column 1, of cylindrical or ot 1er form and support u on the upper end of said column, one en of a U-s aped channeledgirder 2, or the ad'acent ends of a lurality of such girders, t e supported en of the girder or irders overhangin and not completely bri ging the bore or c amber 3, of the column.

Where the second column 4 is to stand in superposcd relation to the first column and the 'rders thereof, the second column will standnupon the adjacent ends of the girders, and its bore' will be in communication with the bore of the underlying column and with the channels of the girders, as shownv clearly in Fig. 3.

In the erection of a structure of this char acter, the columns and girders can be made and transported to the int Where the structure is to be erecte as independent units, that is to say, in the same manner that iron columns and girders are now handled.

In the actual erection of the structure, the preferred course is to first locate the basement or undermost columns and place the girders thereon for the first floor. Reinforce bars 5 arev then arranged in the column in the customary manner, which bars or like ones, may also project to a higher plane than vthe girders for the purpose of entering and acting as reinforcements for the overlying column 4, when the same is placed upon the grders 2.

When the columnl l and girders 2 are arranged as described, and preferably before the column 4 is in place, the girders are also reinforced by the customary bars 6, or in any other well known manner, at least one or more of the bars 6, bridging the bore of the underlying column, and the space beA tween the adjacent or alined girders. The column and the girders also receive angular reinforce bars 7 the horizontal arms of the said bars bein arranged longitudinally in the channels o the adjacent girders and the vertical arms extending downwardly into thecolumn. A cementitious material 8 is then poured or otherwise introduced into the column until the same is filled, the su ply of material continuing until it fills the channels of the girders, though if an overlying column is to be placed upon the girders, the supply of cementitious material will preferably be cut off before the girder channels are completely filled to enable the workman to easily and conveniently place angular reinforce bars 9, in the upper parts of such channels with their vertical arms extending upward into the column 4, as shown in Fig. 3. In this connection it is to be understood that the density of the cementitious material may determine whether or not it is necessary to first place the reinforce bars in position and so sup ort them, or to put such bars into position a ter the material has been poured or otherwise introduced into the column or columns and girders, to constitute when set an integral monolithic filling or core, it being understoodthat by this method all of the various columns and girders throughout the building, will be 'united by a skeleton concrete monolith.

It will he apparent that the filling or core Will adhere to the various columns and girders so as to be practically integral therepractical to employ columns and girders of metal or other non-combustible material and reinforce or strengthen the same by a monolithic filling or core.

From the above description it will be apparent that I have produced a structure possessing the features of advantage enumerated, and While I have illustrated and described the preferred embodiment of the invention it is to be understood that I do not desire to be restricted to the exact details of construction shown and described as obvious modifications will suggest themselves to one skilled in the art.

I claim A monolithic structure, comprising a hollow7 column, a plurality of horizontal girders 'resting at their adjacent ends uponthe column-without bridging the bore thereof and provided with longitudinal channels in their upper sides, a second vertical column vertically above the first-named column and restingon the adjacent ends of the girders and bridging the channels thereof, a set of right angle shaped reinforce bars extending the said second column, one or more vertical reinforce bars arranged in the two columns and extending through the space between the ends of the girders and disposed nearer the center of said columns than the right angle shaped reinforce bars, one or more horizontal reinforce bars extending into the channels of opposite girders and through the space between the ends thereof and between the two columns and arranged nearer the centers of said girders than the sets of right angle shaped reinforce bars, and a cementitious filling for the columns, the girders, and the space between the columns and the girders and embedding all of the said reinforce bars firmly in position.

In testimony whereof I aiX my signature, in the presence of two witnesses.

ALBERT G. HIGGINS. Witnesses:

HELEN C. KODGERS, G. Y. THORPE', 

